Sienna and Sierra Bernal are identical twins - but Sienna is half the size of her twin sister Sierra. The blonde-haired, blue-eyed teens age 13 look so similar - but one sister has rare primordial dwarfism. Primordial dwarfism is so rare that that there are only 200 people in the world known to have the condition. Sienna is the only primordial dwarf in the world to have an average sized twin.
Two year old Alex Connerty is one in three million, as he is a primordial dwarf. Unlike other forms of dwarfism, Alex's body will stay in proportion. He will always be a unique little man, never growing past three feet tall. But with this rare form of restricted growth comes restricted life-expectancy, he is not expected to live past thirty.
Kenadie Jourdin-Bromley, This tiny girl has primordial dwarfism, an extremely rare form of dwarfism that means her head and limbs are absolutely in proportion to the rest of her body, giving her a doll-like appearance. When she was born she was so tiny nurses called her Thumbelina. Most cases of short stature are caused by skeletal or endocrine disorders. It is rare for individuals affected by primordial dwarfism to live past the age of 30.